The Ed Sullivan Theater is a theater at 1697–1699 Broadway, between 53rd and 54th Streets, in the Theater District of Midtown Manhattan in New York City. Built from 1926 to 1927 as a Broadway theater, the Sullivan was developed by Arthur Hammerstein in memory of his father, Oscar Hammerstein I. The two-level theater was designed by Herbert J. Krapp with over 1,500 seats, though the modern Ed Sullivan Theater was downsized to 370 seats by 2015. The neo-Gothic interior is a New York City landmark, and the building is on the National Register of Historic Places.

53rd Street is an east–west street in Midtown Manhattan, New York City, which measures 1.83 miles (2.94 km) long. The street runs westbound from Sutton Place across most of the island's width, ending at DeWitt Clinton Park at Eleventh Avenue.